Lots of stuff filmed on the grand plateau rather than on the Graham Saddle route if I remember the features correctly. Not a big deal as basing at Plateau Hut would make filming of all the fiddly bits logistically simpler, but amusing to pick what is on route and what is not. I was amazed to see that the De La Beche bivvy rock is still there, I thought it would have fallen into the glacier by now. I remember the moraine wall getting up to it (in 1975) as fairly insecure.